CN-121988378-A - Catalyst for Fischer-Tropsch reaction and preparation method thereof

Abstract

The present invention provides a catalyst for a Fischer Tropsch (FT) reaction, comprising a composite support comprising alumina and zeolite uniformly distributed, and a metal uniformly supported on the composite support, wherein the metal comprises Co, and a method of preparing the catalyst.

Inventors

• LI CHANGKUI
• LI HAOTING
• LI CHENGYU
• LIN YUNZHI

Assignees

• SK新技术株式会社

Dates

Publication Date

20260508

Application Date

20250117

Priority Date

20241107

Claims (15)

1. 1. A catalyst for fischer-tropsch (FT) reactions comprising: composite support comprising uniformly distributed alumina and zeolite, and A metal supported on the composite carrier, Wherein the metal comprises Co.
2. 2. The catalyst for Fischer-Tropsch reaction according to claim 1, wherein the catalyst has a composition uniformity of 5.0 or less specified by UN of formula 1, (1) In formula 1, UN is the composition uniformity, C Al is the composition of alumina taking the total content of alumina and zeolite as denominator and taking the content of alumina as a molecule, C Al (ave) is the average alumina composition in a section of the support passing through the center of the composite support, C Al (i) is the composition of alumina at the i-th position when the positions spaced apart at prescribed intervals along the reference line are sequentially numbered on the reference line, and M is the total number of positions of the alumina composition measured on the reference line, and is a natural number of 20 to 500.
3. 3. The catalyst for fischer-tropsch reaction according to claim 1, wherein the zeolite has a structure of MRE or MFI.
4. 4. The catalyst for fischer-tropsch reactions of claim 1, wherein the zeolite comprises EU-2, ZSM-5, ZSM-48 or a combination thereof.
5. 5. A fischer-tropsch reaction catalyst according to claim 1, wherein the weight ratio of alumina to zeolite in the composite support is from 1:1 to 1:5.
6. 6. A fischer-tropsch catalyst according to claim 1, wherein the composite carrier content of the catalyst is at least 80 wt%.
7. 7. The catalyst for fischer-tropsch reaction according to claim 1, wherein the metal further comprises Fe.
8. 8. A fischer-tropsch catalyst according to claim 1, wherein the metal content of the catalyst is at least 5 wt%.
9. 9. The catalyst for fischer-tropsch reactions of claim 1, wherein the catalyst further comprises a promoter metal.
10. 10. The catalyst for fischer-tropsch reactions of claim 9, wherein the promoter metal comprises Y, ce, la, W, mo or a combination thereof.
11. 11. A fischer-tropsch catalyst according to claim 9, wherein the promoter metal content of the catalyst is at least 1wt%.
12. 12. The catalyst for fischer-tropsch reaction according to claim 1, wherein the catalyst comprises a reduction peak at 600 ℃ or higher when measured by hydrogen temperature programmed reduction (H 2 -TPR).
13. 13. A process for preparing a catalyst for fischer-tropsch reactions comprising the steps of: preparing a composite support mixture comprising alumina hydrate and zeolite; preparing a precursor solution of a metal comprising Co; Mixing the composite support mixture and the precursor solution to produce a catalyst mixture, and Calcining the catalyst mixture.
14. 14. The method of preparing a catalyst for a fischer-tropsch reaction according to claim 13, wherein the step of preparing the catalyst mixture further comprises the step of adding an acid to the precursor solution.
15. 15. The method of preparing a catalyst for a fischer-tropsch reaction according to claim 13, wherein the step of preparing the catalyst mixture comprises the steps of: mixing the composite carrier mixture and the precursor solution to prepare a paste, and Extruding the paste to produce an extrudate, The step of calcining the catalyst mixture comprises the step of calcining the extrudate.

Description

Catalyst for Fischer-Tropsch reaction and preparation method thereof Technical Field The invention relates to a catalyst for Fischer-Tropsch (FT) reaction and a preparation method thereof. Background Synthetic fuels (SYNTHETIC FUEL or synfuel) are generally defined as hydrocarbons that are produced for use in synthetic fuels from synthesis gas, which is a mixture of carbon monoxide and hydrogen, by a series of chemical reactions, as distinguished from hydrocarbons selected for distillation from crude oil. A typical reaction among reactions for synthesizing liquid hydrocarbons from synthesis gas using a catalytic reaction is the FT reaction. Aviation fuel is fuel for aircraft engines. Sustainable aviation fuel (sustainable aviation fuel, SAF) refers to aviation fuels made from sustainable and renewable raw materials. The raw material may be a raw material of biological origin such as seaweed, animal/plant and edible oil or a synthetic raw material prepared using carbon dioxide in air, hydrogen gas derived from water and the like. SAF can replace traditional aviation fuel without retrofitting existing aircraft. SAF has the advantage of reducing carbon emissions by up to 80% compared to existing aviation fuels made based on fossil resources such as petroleum, coal, etc. SAF has been attracting attention not only from the viewpoints of exhaustion of existing fossil resources, increase in crude oil prices, and the like, but also from the viewpoints of prevention of global warming and reduction of carbon dioxide emissions. [ Prior Art literature ] [ Patent literature ] (Patent document 1) KR10-2018-0125087A Disclosure of Invention First, the technical problem to be solved According to one aspect of the present invention, a novel catalyst may be provided which may be used in a Fischer-Tropsch (FT) reaction. According to another aspect of the present invention, a method of preparing the catalyst may be provided. The catalyst of the present invention can be widely applied to SAF production technology, and thus, can contribute to prevention of global warming by reducing carbon emissions. (II) technical scheme One aspect of the present invention is a catalyst for a Fischer-Tropsch (FT) reaction comprising a composite support comprising alumina and zeolite uniformly distributed, and a metal supported on the composite support, wherein the metal comprises Co. According to one embodiment (email), the catalyst has a composition uniformity of 5.0 or less specified by UN of formula 1. (1) In formula 1, UN is the composition uniformity, C Al is the composition of alumina taking the total content (wt%) of alumina and zeolite as denominators and taking the content (wt%) of alumina as a molecule, C Al (ave) is the average alumina composition in a section of the support passing through the center of the composite support, C Al (i) is the composition of alumina at the i-th position when positions spaced apart at prescribed intervals along the reference line are sequentially numbered on the reference line, C Al (i) is the total number of positions of alumina composition measured on the reference line, and is a natural number of 20 to 500. According to one embodiment, the zeolite has the structure of MRE or MFI. According to one embodiment, the zeolite comprises EU-2, ZSM-5, ZSM-48 or combinations thereof. According to one embodiment, the weight ratio of alumina to zeolite in the composite support is from 1:1 to 1:5. According to one embodiment, the composite support is present in the catalyst in an amount of at least 80% by weight. According to one embodiment, the metal further comprises Fe. According to one embodiment, the catalyst has a metal content of at least 5 wt.%. According to one embodiment, the catalyst further comprises a promoter metal. According to one embodiment, the promoter metal comprises Y, ce, la, W, mo or a combination thereof. According to one embodiment, the catalyst has a promoter metal content of at least 1 wt.%. According to one embodiment, the catalyst comprises a reduction peak above 600 ℃ when measured by hydrogen temperature programmed reduction (H 2 -TPR). Another aspect of the invention is a method of preparing a catalyst for FT reaction comprising the steps of preparing a composite support mixture comprising alumina hydrate and zeolite, preparing a precursor solution of a metal comprising Co, mixing the composite support mixture and the precursor solution to prepare a catalyst mixture, and calcining the catalyst mixture. According to one embodiment, the step of preparing the catalyst mixture further comprises the step of adding an acid to the precursor solution. According to one embodiment, the step of preparing the catalyst mixture comprises the steps of mixing the composite support mixture and a precursor solution to prepare a paste, and extruding the paste to prepare an extrudate, the step of calcining the catalyst mixture comprising the step of calcining the extrudate. (III) beneficial effects Ac